JPS5658146A - Manufacture of optical information recording medium - Google Patents

Manufacture of optical information recording medium

Info

Publication number
JPS5658146A
JPS5658146A JP13377379A JP13377379A JPS5658146A JP S5658146 A JPS5658146 A JP S5658146A JP 13377379 A JP13377379 A JP 13377379A JP 13377379 A JP13377379 A JP 13377379A JP S5658146 A JPS5658146 A JP S5658146A
Authority
JP
Japan
Prior art keywords
substrate
film
disk
recording medium
metallic mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13377379A
Other languages
Japanese (ja)
Inventor
Mitsuo Yamashita
Masaaki Morita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13377379A priority Critical patent/JPS5658146A/en
Publication of JPS5658146A publication Critical patent/JPS5658146A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Optical Record Carriers (AREA)

Abstract

PURPOSE:To make lightweigt, by using the foamed resin as the material of the substrate in case an optical information recording medium having a multilayer structure including the transparent protecting layer having a uniform thickness and the smoothed record layer. CONSTITUTION:The tellurium thin film 13 functioning as the record layer 3 is formed by the vacuum evaporation on the lower face of the polyester film 11 functioning as the transparent protecting layer 4. The film 14 is cut into a proper size and set in the metallic mold of the compressor, and the lump of the heated and kneaded resin material 2' which is to be turned into the substrate 2 is put at the center of the mold. Thus the material 2' is compressed with the metallic mold and rolled to be formed into a disk shape. At the same time, the disk 2'' and the film 14 are adhered close to each other. The disk 2'' is taken out of the metallic mold and cooled to be turned into the substrate 2. Finally, the center hole 17 is blanked, and the outer circumference of the hole 17 is cut to obtain the prescribed radius (l).
JP13377379A 1979-10-17 1979-10-17 Manufacture of optical information recording medium Pending JPS5658146A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13377379A JPS5658146A (en) 1979-10-17 1979-10-17 Manufacture of optical information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13377379A JPS5658146A (en) 1979-10-17 1979-10-17 Manufacture of optical information recording medium

Publications (1)

Publication Number Publication Date
JPS5658146A true JPS5658146A (en) 1981-05-21

Family

ID=15112630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13377379A Pending JPS5658146A (en) 1979-10-17 1979-10-17 Manufacture of optical information recording medium

Country Status (1)

Country Link
JP (1) JPS5658146A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0189905A2 (en) * 1985-01-29 1986-08-06 Victor Company Of Japan, Limited Method of manufacturing recording discs
FR2582256A1 (en) * 1985-05-21 1986-11-28 Beugin Jean Yves Optical read-out disc and method for producing it

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5114263A (en) * 1974-07-26 1976-02-04 Hitachi Ltd Setsugono roeiboshiho

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5114263A (en) * 1974-07-26 1976-02-04 Hitachi Ltd Setsugono roeiboshiho

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0189905A2 (en) * 1985-01-29 1986-08-06 Victor Company Of Japan, Limited Method of manufacturing recording discs
FR2582256A1 (en) * 1985-05-21 1986-11-28 Beugin Jean Yves Optical read-out disc and method for producing it

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